4 CIECrLAE 10 6, r. S. DEPARTMENT OF AGEICF/LTF/EE 



also often present. Occasionally the oviposition scars so weaken 

 the twigs that they subsequently break, with the weight of the fruit 

 out beyond them. 



Figure 2. — Apple twigs showing the characteristic shaggy, roughened appearance 

 due to the oviposition wounds' of the srreen clover tree hopper: A. Natural size; 

 B, X 3 



FOOD AND OVIPOSITION PLANTS 



Iii the orchards of the Pacific Northwest the tree hoppers feed al- 

 most exclusively upon alfalfa, though occasionally upon sweet clover. 

 They are known, however, to feed upon grass, red clover, and other 

 forage plants. In rare cases the newly hatched nymphs have been 

 seen feeding upon apple and pear buds, wild mustard, and dande- 



